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aleksandrvk [35]
3 years ago
13

Juan last five test score were 80,70,100,90,75 what is his average score

Mathematics
1 answer:
bixtya [17]3 years ago
7 0

Answer:83

Step-by-step explanation:

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Step-by-step explanation:

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2 years ago
I walk each day to school. By what percentage would I need to increase my usual average speed in order for the journey to take 2
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Answer:

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Step-by-step explanation:

Let v, t be the current average speed and the time taken to reach the school respectively.

As distance = speed x time, so,

distance, d=vt...(i)

Let V be the new average speed in order to to take 20% less time than t.

So, time taken with speed V = t-20% of t = t- 0.2t= 0.8t

As distance is constant, so

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V= v/0.8=1.25v

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=25%

Hence, the percentage increase in the average speed is 25%.

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Step-by-step explanation:

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Step-by-step explanation:

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